Flowkey - The easiest way to learn piano with your iPhone or iPad
Chroma - Welcome to Chroma Cutlery Cnife - Manufacturer of kitchen knives, includes products and contact information.
Yousician - Learn to play music at home, at your own pace
Sketch Palettes - Sketch plugin to save and load colors into the color picker
Melodics - Melodics is a desktop app that teaches you to play MIDI keyboards, pad controllers, and drums.
Colordot for iOS - A color picker for humans.